Polak J, Bartoszek M, Sułkowski W W
Department of Environmental Chemistry and Technology, Institute of Chemistry, University of Silesia, Szkolna 9, 40-006 Katowice, Poland.
Water Res. 2009 Sep;43(17):4167-76. doi: 10.1016/j.watres.2009.06.040. Epub 2009 Jun 25.
The course of the humification process of sewage sludge collected from three biologic-mechanical treatment plants with different treatment technologies was studied. The maturity of sewage sludge and its usefulness for agricultural purposes was also discussed. The physical-chemical properties of humic acids extracted from sewage sludge received from comparable stages of sludge purification were described. Changes of the sludge properties during sewage purification and the progress of the humification process were investigated with EPR, IR and UV/VIS spectroscopic methods. The content of the elements and the carboxylic groups in humic acids extracted from each stage of the sewage treatment were also determined. It was found that the humification processes take place in all three treatment plants but with different intensities resulting from the differences in the individual cleaning processes in these plants. The most intensive changes of physical-chemical parameters in the extracted humic acids were observed in the anaerobic digester where mesophilic fermentation occurs. The sludge oxygenation processes also significantly affect the course of the humification process during sewage treatment.
研究了从三个采用不同处理技术的生物-机械处理厂收集的污水污泥的腐殖化过程。还讨论了污水污泥的成熟度及其农业用途。描述了从污泥净化可比阶段获得的污水污泥中提取的腐殖酸的物理化学性质。采用电子顺磁共振（EPR）、红外（IR）和紫外/可见（UV/VIS）光谱法研究了污水净化过程中污泥性质的变化以及腐殖化过程的进展。还测定了从污水处理各阶段提取的腐殖酸中元素和羧基的含量。结果发现，所有三个处理厂都发生了腐殖化过程，但由于这些厂各自的清洁过程不同，腐殖化强度也不同。在发生中温发酵的厌氧消化池中，观察到提取的腐殖酸中物理化学参数的变化最为剧烈。污泥氧化过程也显著影响污水处理过程中的腐殖化过程。
